Java OOP Interview Q&A for Beginners & Experts 🖥️

In this video, we discuss Java Object-Oriented Programming (OOP) interview questions and answers, covering core concepts and related topics.

Well, in order to design strong object-oriented design for Java or JavaEE Web Applications, you need to have strong knowledge of OOPS concepts and OOPS principles.

In this video, we cover interview questions on basic and advanced OOPS concepts for beginners:
- Object
- Class
- Abstraction
- Encapsulation
- Inheritance
- Polymorphism
- Composition
- Aggregation
- Association
- Cohesion
- Coupling
- Delegation

Here are the interview questions discussed in the video:
What is object-oriented programming? (0:13)
What is a class and what is an object? (0:56)
What is encapsulation? (1:31)
What is inheritance? (2:09)
What is polymorphism? (2:44)
What is abstraction? (3:18)
What is method overloading? (3:44)
What is method overriding? (4:08)
What is the difference between overloading and overriding? (4:35)
What is the this keyword? (5:00)
What is the super keyword? (5:19)
What are constructors in Java? (5:39)
What is constructor overloading? (6:01)
What is an abstract class? (6:25)
What is an interface in Java? (6:53)
What is a Java bean? (7:28)
What is the difference between a Java bin and a POJ? (8:05)
What is composition in OOP? (8:40)
What is aggregation in OOP? (9:15)
What is association in OOP? (9:44)
What is coupling in Java? (10:12)
What is cohesion in OOP? (10:47)
What is runtime polymorphism? (11:18)
What is the difference between shallow copy and deep copy? (11:46)
What is object cloning in Java? (12:18)
What is the difference between is a and has a relationships? (12:50)
What is the principle of favor composition over inheritance? (14:02)
What is object identity versus object equality? (15:00)
What is the difference between immutable and mutable objects? (15:47)
What is method hiding in Java? (16:33)
What is object association and why is it important? (17:06)

#java #interviewquestions #oop